Affiliate Marketing Income — Do I Need to Pay Tax?
You have built an audience — maybe through a blog, a YouTube channel, a podcast, or a social media following — and now brands are paying you commissions for recommending their products. Affiliate marketing can start as a trickle of pocket money and grow into a serious income stream. But at what point does HMRC take an interest, and how much tax do you actually need to pay?
The short answer is: yes, affiliate marketing income is taxable. The longer answer involves some nuances around trading allowances, expense deductions, and how affiliate income interacts with any other income you earn. Let us walk through it.
What counts as affiliate marketing income?
Affiliate income is any payment you receive for promoting someone else's products or services, typically through tracked links. Common examples include:
- Amazon Associates commissions
- Affiliate network payments (Awin, ShareASale, CJ Affiliate, Impact)
- Direct affiliate programmes run by individual companies
- Referral bonuses from financial products, software, or subscription services
- Sponsored content payments tied to performance metrics
It does not matter how the payment is structured — per click, per lead, per sale, or flat fee. If you are receiving money for promoting products, that is income, and it needs to be reported.
The £1,000 trading allowance
The UK has a £1,000 trading allowance that applies to miscellaneous trading income. If your total gross affiliate income (before expenses) is £1,000 or less in a tax year, you do not need to register as self-employed or report it on a tax return.
But there is a catch. The £1,000 allowance covers all your trading income, not just affiliate marketing. If you also sell the odd item on eBay, do a bit of freelancing, or earn from any other self-employed activity, all of that counts towards the £1,000 threshold.
Once your total trading income exceeds £1,000, you need to register as self-employed with HMRC and file a Self Assessment tax return. You then have a choice: use the £1,000 trading allowance as a flat deduction (and not claim any other expenses), or deduct your actual business expenses instead. For most affiliate marketers with meaningful expenses, claiming actual expenses works out better.
For more detail on the thresholds, see our guide on how much you can earn before telling HMRC.
How affiliate income is taxed
Affiliate income is treated as self-employed trading income. You pay income tax on your profits (total income minus allowable expenses) at the standard rates:
- 0% on the first £12,570 (personal allowance)
- 20% on profits between £12,570 and £50,270
- 40% on profits between £50,270 and £125,140
- 45% on profits above £125,140
You also pay Class 2 and Class 4 National Insurance, which adds roughly 6–9% depending on your profit level.
If you have a day job, your personal allowance is likely already used by your salary. That means every pound of affiliate profit is taxed at your marginal rate — which could be 20% or 40% depending on your total income.
A common mistake is assuming that because affiliate income arrives irregularly and sometimes in small amounts, it somehow flies under the radar. It does not. HMRC has access to bank account data and can cross-reference payment records from affiliate networks. The days of hoping nobody notices are well and truly over.
What expenses can you claim?
This is where affiliate marketers can reduce their tax bill. The expenses you can claim depend on how you generate your affiliate income:
If you run a blog or website:
- Web hosting and domain registration
- WordPress themes and plugins
- SEO tools (Ahrefs, Semrush, Moz)
- Content writing (if you hire writers)
- Photography and image subscriptions
- Email marketing software
If you create YouTube videos or podcasts:
- Camera, microphone, and lighting equipment
- Video and audio editing software
- Studio or recording space costs
- Thumbnail design tools or freelancer costs
If you promote through social media:
- Scheduling and analytics tools
- Paid promotion and advertising
- Photography and editing apps
General expenses for all affiliate marketers:
- A proportion of your phone and broadband bills
- Home office costs (simplified flat rate or actual proportion)
- Training courses related to your business
- Accountancy fees
- Business bank account charges
- Travel costs for attending conferences or industry events
The key rule is that expenses must be "wholly and exclusively" for business purposes. If you buy a camera that you also use for family holidays, you can only claim the business proportion.
Keeping track of these expenses throughout the year is much easier than trying to reconstruct them in January. Accounted connects to your bank accounts and automatically categorises business transactions, so you always have an up-to-date picture of your expenses. Penny can even prompt you if it spots a potential business expense you have not categorised.
International affiliate payments
Many affiliate programmes are based overseas, particularly in the US. This raises a few practical considerations:
Currency conversion. If you receive payments in US dollars or euros, you need to convert them to sterling for your tax return. You can use the exchange rate on the date you received each payment, or HMRC's published monthly average rates.
US withholding tax. Some US-based affiliate programmes withhold 30% tax on payments to non-US affiliates unless you submit a W-8BEN form, which reduces the withholding rate to 0% under the US-UK tax treaty. If tax is withheld, you can claim a foreign tax credit on your UK tax return to avoid being taxed twice.
Payment platform fees. If you receive payments through PayPal, Wise, or Payoneer, the conversion and transfer fees are deductible expenses.
Record-keeping requirements
HMRC requires you to keep records for at least five years after the 31 January filing deadline. For affiliate marketers, this means retaining:
- Commission statements from each affiliate programme or network
- Bank and PayPal/payment platform statements showing payments received
- Receipts and invoices for all business expenses
- Records of any VAT charged or paid (if VAT-registered)
Most affiliate networks provide downloadable reports showing your earnings. Save these regularly — platforms occasionally change their reporting, close down, or purge old data.
Do I need to charge VAT on affiliate income?
For most affiliate marketers, VAT is not an issue. You only need to register for VAT if your taxable turnover exceeds £90,000, and relatively few individual affiliate marketers reach this level.
However, there is a subtlety. Affiliate marketing is technically a "supply of services" — you are providing a promotional service to the merchant. If the merchant is based outside the UK, the "place of supply" rules may mean that your services are treated as supplied where the merchant is located, which could mean they fall outside the scope of UK VAT entirely.
If your affiliate income is approaching the VAT threshold, it is worth getting specific advice on this. Our VAT registration threshold guide covers the basics.
Affiliate income and Making Tax Digital
Under Making Tax Digital for Income Tax Self Assessment (MTD for ITSA), sole traders with qualifying income above certain thresholds will need to keep digital records and submit quarterly updates to HMRC. This is being phased in from April 2026 for those with income over £50,000.
If your affiliate marketing income (combined with any other self-employment income) puts you above the threshold, you will need MTD-compatible software. Accounted is designed for exactly this — keeping your records digital, categorised, and ready for quarterly submission.
Staying on the right side of HMRC
Affiliate marketing income is one of those areas where people can drift into earning meaningful amounts without ever properly setting up their business affairs. The earlier you get organised, the less stressful tax season will be.
Register as self-employed when you cross the £1,000 trading allowance. Open a separate business bank account. Track your income and expenses from day one. And set aside 25–30% of your profits for tax — because the bill always comes, and it is much nicer to be prepared.
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